Hello, I have been given a cabochon carnelian: flat on both sides, oval, which is just over 7mm deep. To make a rub-over bezel setting I would need bezel strip at least 8mm deep, but I can only find 7mm in the UK. I don't have a rolling mill, so can't thin the silver I have. Could anyone suggest an alternative? I think that claw setting would look odd on such a big stone. Any suggestions gratefully received.